Selective resin synthesis and dual functional resins made thereb

Details Selective resin synthesis and dual functional resins made thereb Selective resin synthesis and dual functional resins made thereb

1987-10-27

1989-05-02

Henderson, Christopher

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

524350, 524384, 525109, 525194, 525208, 525403, C08L 6300

Patent

active

048266175

ABSTRACT:
Disclosed is a new partial capping synthesis wherein resinous mixtures containing controlled amounts of phenolic hydroxyl and/or mercapto functionality, and aliphatic hydroxyl functionality are synthesized. Such synthesis comprises providing one or more resins which in total contain aliphatic primary and/or secondary hydroxyl functionality and oxirane functionality. A single resin or blend of resins may provide the requisite functionality. The one or more resins then are reacted with a carboxyl-functional capping agent bearing phenolic hydroxyl functionality and/or mercapto functionality. This reaction is conducted under reaction conditions and for a time such that the carboxyl functionality of the capping agent selectively reacts with the oxirane functionality of the one or more resins to produce a resinous product containing aliphatic hydroxyl functionality and containing phenolic hydroxyl functionality and/or mercapto functionality.

REFERENCES:
patent: 3096315 (1963-07-01), Tinsley
patent: 3277036 (1966-12-01), Whitworth, Jr.
patent: 4390675 (1983-06-01), Gruber

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